svg_tetraflexagon_editor.py: fix coding style
authorAntonio Ospite <ao2@ao2.it>
Wed, 27 Jun 2018 14:08:15 +0000 (16:08 +0200)
committerAntonio Ospite <ao2@ao2.it>
Thu, 28 Jun 2018 14:34:52 +0000 (16:34 +0200)
Add an expected blank line between a class and a function, reported by
pycodestyle:

  $ pycodestyle svg_tetraflexagon_editor.py
  svg_tetraflexagon_editor.py:117:1: E302 expected 2 blank lines, found 1


No differences found